#include <bits/stdc++.h>
using namespace std;

vector<int> mul(vector<int> &A, int B) {
	vector<int> C;
	int t = 0;
	for (int i = 0; i < A.size() || t; ++i) {
		if (i < A.size()) {
			t += A[i] * B;
		}
		C.push_back(t % 10);
		t /= 10;
	}
	while (C.size() > 1 && C.back() == 0) {
		C.pop_back();
	}
	return C;
}

int main() {
	string a;
	int B;
	cin >> a >> B;
	vector<int> A, C;
	for (int i = a.size() - 1; i >= 0; --i) {
		A.push_back(a[i] - '0');
	}
	C = mul(A, B);
	for (int i = C.size() - 1; i >= 0; --i) {
		cout << C[i];
	}
	return 0;
}